Hydroplane-operating mechanism for submarine boats



J'. F. w; KOLVIG. HYDR'OPLANE QPE-RATING MECHANISM FOR SUBMARINE BOATS.

' 1,428,335, PatentedSepti5,1922.

APPLICATION FILED JAN- 12, 1922 a swans-sum 1.

//////////4 7/4 rill/1 v///////A J. F. w. koLvle. HYDROPLANE OPERATINGMECHANISM FOR SUBMARINE BOATS.

- APPLICATION FILED JAN. I2, I922.

1,428,335." PatentedSept. 5,1922.

' 4 3SHEETS-SII-IEET 3. J2 5 aoi-rnnnns n. nonvre, or nnrnearonr,oen'nncrronr, nss-rornon'ro lrnnnmgn" Toni-E130 BOAT. COMPANY, onnnrnenronr, CONNECTICUT, a'conronnrion or IMAINE.

nYnnortann-ornnarrne runonnnrsiu ron snnivmn nn roars.-

Application filed January 12, 1922. Serial "No. 528,691.

To all whom it may concern;

Be it known that LdoI-rANNnsF. WV. KoL- VIG, a citizen of the UnitedStates, residing.

when submerging or risingby means of hydroplanes. These hydroplanes arepivotally and tiltably mounted to be extended, into operative position,or folded into inoperative position, or to present either face to theaction otthe-passing waters to cause the boat to submerge or to rise.Independent mechanisms are usually required and provided for extendingand folding, and for tilting such hydroplanes. It is the object of thisinvention to provide means whereby the several adjustments of thehydroplanes may be effected by a single mechanism, so that thehydroplanes may be extended, or folded, and tilted when extended by acontinued manipulation of the same member initially operated to extendthe hydroplanes.

"he invention consists of pillow blocks mounted within the boat;cylinders mounted within the pillow blocks and ha'vinga limited rotarymovement; plungers mounted within the cylinders to reciprocate thereinand to have a limited independent rotary movement; plugs havingscrewthread conncction with the plungers; hydroplanespivotally connectedto the cylinders;-link connections between the hydroplanes and plugs;

stop means to limit the unfolding of the hydroplanes when extended intooperative position; clutch means between the hydroplanes and theplungers to insure a firm connection and a positive turning of thehydroplanes with the plungers when the latter are rotated to tilt thehydroplanes to the desired angle to cause the boat to submerge, or torise, and guide means for. the cylinders and plungers, s0 combined andarranged, as here inatter explained, as to attain the stated object.

In the accompanying drawings, illustrating the invention, in the severalfigures of which like parts are similarly designated, Figure 1 is atransverse section 01 part of a submarine boat provided withhydroplaneoperating mechanism embodying the invent on, partsbeing-broken away to show-poi t-lOIlS 1n sect1on and bringout moreclearly the relation of the elements, the hydroplanes being folded; Fig.2 is a detail central longitudmal section on 'a larger scale, thehydroplane being extended, the plug'at the limit of its forwardmovement, and the plunger at the point in its forward travel to "have'a-combinedlongitudinal and rotary movement. 'nnparted'thereto during theremainder of. 1ts torward travel. Fig. 31s a view similar to Fig. 2showing theposition of, the parts when the plunger is at the limit ofits outward travelin the cylinder and in clutched engagement with thehydroplane. Fig.4 is a transverse section drawn on the line m'a or Fig.3. Fig. 5 is a; detail horizontal sec tion abouton'the line of Fig. 3.Fig.6

.is a view similar to Fig.- 4 showing the cylinder andplunger turned totilt the hydroplane into'submerging position. Fig? is a perspective viewof the eyunde'r."

In the embodiment oftheinvention illustrated, the pillow blocks 1 areshown mounted upon a plate. or deck2'within'the sides or thesuperstructure 3015 a submarine boat,

the hull or body of the boat being indicated sired construction bestadapted for the particular application of the invention.

A cylinder 5 is mounted in each of the pil low blocks, and'is flanged atits outer end as indicated at 6, and formed with outwardlyextending-lugs to which the hydroplane is, pivotally connected in amanner hereinafter explained; Longitudinal slots 8'are formed These:

at 4:. The pillow blocks may ,be of any de i for clearness sake, butFigs. 4 and 5 show their actuallocation on the cylinder and pillowblocks, namely, horizontal. v guide extension'lO is connected to theinner end of each of the cylinders .5 and is formed upon its inner wallsat diametrically opposite points with longitudinally disposedv groovesor guide-ways 11, in which lugs 12 are adapted to operate. The hollowguide extension 10 is of less diameter than the cyl-x inder 5, and issecured thereto by meansof a screwthi-ead connection. I

A plunger 1s mounted 1n each of the-Eyl A hollow inders 5 and compriseshead 13 and a stem 14, the latter being of a diameter to enter thehollow extension 10, and the head 13 being of a diameter to lit withinthe cylinder 5. Lugs 12 are formed upon opposite sides of the stem M ofthe plunger, and are located some distance from the in nor end of thestem, so that when the lugs 12 clear the guide-ways 11, the innerportion of the stem let obtains a bearing within the hollow guideextension 10, thereby assisting materially in retaining the plunger inproper position and preventing its binding within, the cylinder. Thestem lei is hollow, and an end portion thereof is formed with internalscrewthreads 15, which mesh with corresponding screwthreads 16 formedupon the outer end of a shaft 17, which is mount d inthe hollow guideextension 10, and is formed with an outwardly disposed annular collar 18entering a corresponding annular groove in the bearing portion of thehollow Xtension 10. The latter is lijtted with a threaded cap 19 whichholds the shaft 17 from any longitudinal movement. The scrcwthrezuls l5and 16 are of high pitch to insure a relatively long movement of theplunger while imparting a comparatively small rotary movement to theshaft 17. The head 13 of the plunger is centrally recessed, and in- Yternally screwthreaded, as indicated at 20.

This head is likewise formed in its outer side with an annular groove 21in which. is fitted a yoke ring 22, the latter being provided with thelugs 9, which are oi? a length to operate in the guide-ways 8 of thecylinder and similar guide-ways 23 formed in the sides oi the pillowblocks or casings 1 in position. to register with the guide-ways 8. Thisyoke is split in order to assemble it, and its parts are held togetherby bolts or screws 22.

The location oi. the guide-ways S and 28 is immaterial, but, inpractice, such guideways will be disposed to be in the plane of thejoint formed between the body of the pillow block and its cap plate. Forconvenience the guide-ways 8 and 23 are shown in Figs. 1, 2, and 8, asbeing vertically disposed, but in practice they will occupy a horizontalposition, as indicated in Figs. 1- and 5, as previously stated.

A plug 24: is provided for each of the plungers and is exteriorlythreaded to match the internal screwthreads 20 formed in the recess inthe head of the plunger. i l hen the hydroplane is folded against theside of the boat, the plug 2 l occupies a position at the outer end ofthe recess formed in the head 01 the plunger, as shown most clearly inFig. 1, but when the hydroplane is extended into operative position andis clutched to the plunger so as to turn therewith, the plug 24 occupiesa position at the inner end of the plunger as indicated most clearly inl ig. 3. When. the plunger is traveling outward in the cylinder 5 to emtend the hydroplane into operative position, the plug 24 movestherewith, but when the hydroplane is fully extended into operativeposition, a continued. outward movement of the plunger is effectedsimulta- .ncously by a rotary movement thereof, the plunger advancingwith reference to the plug 24; by reason 'ot' the serewthread connectionbetween the plug and. plunger. This combined longitudinal and rotarymovement of the plunger results in bringing into operation a clutchmechanism between the plunger and hydroplane to insure a positiveturning of the hydroplane with the plunger and cylinder. During theoutward movement of the plunger within the cylinder 5, the plunger isheld troni turning by the lugs 12 traveling in the grade-ways 11, butwhen the plug 2 reaches the limit of its outward movement with theplunger, the guide lugs 12 clear the guide-ways 1]., and thereby admitof the plunger turning, and, at the same time, continuing to advance tobring the clutch mechanism. between the hydroplane and the 'ilunger intooperation. I

The plunger is caused to turn by reason of the screwthread connection 20between it and the plug 2-4:, and the turning movement is somewhatassisted by the screwtlnread connection between the plunger and theshaft 17. The cylinder 5 ren'iains stationary throughout the forwardtravel of the plunger by means oi. the lugs 9 operating in theguide-ways 23 and 8. The yoke 22 has relative turning movement on thehead of the plun 1:, but moves with the latter to admit of its lugs 9traveling in the guiderays 8 and 23. The yoke 22, with its lugs 9,constitliitcs holding means to prevent a tation of the cylinder 5 duringthe combined longitiulinal and rotary movement of the plunger. When theplunger reaches the limit of its liorwaid movement, the yoke ring 22 hasadvanced to cause its lugs?) to clear the guide-ways 28 ot' the pillowblock, or like fixed bearing 1, and register with slots orclearance-ways 25 extending laterally l rom the outer ends of theguide-wavs 23. The laterally extending slots, or clearance-ways 25,project in opposite directions from the guide-ways, as indicated mostclearly in Figs. land 6. At the moment the plunger reaches the limit ofits forward movement, the clutch between the plunger and hydroplane iscompletely engaged, and the lugs 9 register with the slots, orclearance-ways 25, hence a continued rotation of the shaft 17 causes theplunger, cylinder, and

hydroplane to turn, whereby the inclination oi the hydroplane may bereversed to admit of the boat submergmg.

The hydroplane is indicated at 26, and

a suitable connection 28. The heelof the arm 27 is broadened andterminates in projections 29 and 30, which are spaced apart.

The projection 30 is, in'efli'ect, a stop, and engages the outer face ofthe flange end 6 of.

the cylinder 5, thereby limiting the outward and downward movement ofthe hydroplane when swung into operative position. .The stop 80 relievesall the internal mechanism and the shaft 17 of all strain, and holds thehydroplane when extended against downward thrust upon its upper face.The pro j ection 29 is essentially a clutch element, and

cooperates with a lip 31 projecting outwardly from the head 18 of theplunger, such lip forming the companion clutchelement. The clutchelement 29 engages the inner face of the clutch element 31 when theclutch is engaged, as shown most clearly in Fig. 8. The space 32,separating the clutch element 29 from the stop 30, receives the clutchelement 31, and it will thus be understood that the clutch element 81cooperates with both projections 29 and 80 to securea firm connectionbetween the plunger and hydroplane so as to secure a locking effectwhich, similarly to the lower projection 30, keeps the hydroplane fromfolding back, and thereby relieves the mechanism vfrom strain. Also, bythe pressure exerted, either upwards or downwards, by the water actingon the hydroplane when tilted in anydirec tion, this clutching featurehelps to keep the mechanism from any tendency of loosening or rattling,in short, locksit securely in place against folding or extending anyfurther -while the hydroplane is being rotated back andforth within thelimiting angles of rise or dive. a

A link 33 forms connecting means between the hydroplane and plunger, andis pivotally connected at its outer end to the heel of the arm 27, andat its inner end to the plug 24. \Vhen the plunger is at the limit of(its inner movement within the cylinder 5, the j hydroplane 26 is foldedagainst the sidefof the boat into shipped position (Fig. 1).

When the hydroplaneis extended into oper-.

ative position, the plunger andthe plug. 2 1 carried thereby, occupy a'poslt on at the outer or forward end of the cylinder (Figs- The plungerreceives; a greater 2 and movement within the cylinder than the plug,this being due to the fact that the plug 24 ceases to move forward whenthe hydroplane The arm 27 is pivotally connected to the lug 7 by meansof' is. fully extended and the stop 30 comesin contact with the outerend ,6 of the cylinder 5. lVhen the plug'241 ceases to move forward, theplunger continues to advance by a combined rotary and longitudinalamovement to bring the clutch mechanism between the plunger andhydroplaneinto action, and to bring the yoke 22 into positionso that itslugs 9' will register with the lateral slots. or

clearance-ways 25,.thereby releasing the cyl i nder 5 so that theplunge'rand cylinder may turn to tilt thehydroplane to cause the boat tosubmerge or rise as desired by varying the angle of tilting. Theseseveral operations are effected by rotation of the shaft 17 in onedirection," as to the right. I

. It should bestated that the parts are so.

disposed that when the hydroplane is initially extendedintooperativeposition, it is tilted so thatits lower .sface-isinclinedupwardly and'forwardly, causing a rising. effect, of the bow,thereby preventing premature submerging" of the boat when drivenforward. To cause the boat to submerge, it is". necessary to tilt thehydroplane to cause its upper-face to incline upwardly and rearwardly,whereby the boat is depressed by the action. of the passing waters uponthe upper face of the hydroplane. Y

It is to be understood-that the disposition of the guide-ways- 23-controlsthe relative normal positionofthe cylinder; 5' and thehydroplanepivotedthereto, since the lugs 9.

of the yoke 22 travelwin the guide-ways'8 and 23 during the longitudinalmovement of the plunger within the cylinder, hence the relativepositionof the hydroplane during, its extending andr'folding movements may bepredetermined.- "When the guide-ways 23 extend parallel with thelongitudinal. axis of the cylinder, the hydroplane isinclined normallyto the horizontal during its folding, and unfolding, with the resultthat when the hydroplane is extended into operative. position, it isinclined so as to present its lower face tofthe action of the waterswhen the boat is in forward'movement to prevent premature submergencethereof, and to cause the boat to submerge, it is necessary to tilt thehydroplane to areverse inclination. ,By' inclining the guideways 28 inopposite di rections, it is possible to fold the hydroplane against theside of the boat so that its pivotal axis. is parallel with alongitudinal and horizontal plane, and; when extended into so as to havea risingeife'ct, "as previously 1 stated. By this arrangement, thehydroi plane isadaptedtoi fold squareaga'inst the side of the boat so asto presenta somewhat better appearance. I i V .The shaft 17 hasits'oppositeend portions i I reversely screwthreadedv onport'orstarboard sides, as indicated most clearly in Fig.1, and maybe operatedfrom any suitable source of 12o operative position, the hydroplane istilted shaft 17' is rotated, and by reason. of its screwthreadconnections with the plungers of the oppositely disposed hydroplanemechanisms, the latter are actuated simultaneously by a like movement-toproject the i 10, hydroplanes into operative position, to tilt such hycroplanes, when extended, to the required angle to cause the. boattosubmerge, to go level, or to rise, or to fold the hydroplane against thesides of the boat into 15. shipped position.

As shown in Fig. l, the shafts 17 may be connected to turn together, asby 'the coupling 37, shown as auniversal joint.

It will thus beunderstood that the various 2.0,; movements are effectedwith certainty and in is certain and positive in action, eflicientandreliable in operation, andnot susceptible to derangement ornecessitating frequent repairs or. replacements. Moreover, theconstruction and arrangementare such as to ad- 31)., mit of readyaccessto the parts for inspection, adjustment, or other requiredpurpose. Also, if desired, the clearance-ways or slots 23 and 25, in thepillow block, may be encased from'th'e outside by means ofplates or 35.other suitable means, which together with the stufiing'box mentionedwould prevent any water entering into the interior of the ship throughthe mechanism.

' The ends ofthe extension 19 may be pro- 40 vided with stuffing boxes,thereby making the whole mechanism watertight and 'pres sure proof ifdes1red, so as to enable the use of this mechanism pro ecting throughthe ships hull into the interior of any part of aaithe ship, in whichlatter case each pillow block would be provided with a flange, wherebyit would be connected to the side of the ship.

Other variations than those suggested may ibe made within the principleof the invention and the scope of the claims following.

lVhat Iclaim is 1. In a submarine boat, folding .and tiltinghydroplanes, and operating mechanism- 55.? therefor, including a mainmember mounted to receive a reciprocating movement when extending orfolding the hydroplanes, and a combined longitudinal and rotary movementwhen reaching th'e'limit of its outward 1" travel.

2. In a submarine boat, folding and tilting hydroplanes, and operatingmechanism therefor, including a mam member mounted to receive areciprocating movement when extending or folding thehydroplanes, and acombined longitudinal and rotary movement when reaching the limit of itsoutward travel, and a second member connected, with the hydroplane andhaving screw-thread connection with the main member and adapted toremain stationary during the combined longitudinal and rotary movementof said main member.

In a submarine boat, rotatable members, hydoplanes pivotally supportedby the rotatable members, plungers mounted within the rotatable membersto reciprocate therein and to receive a combined rotary and longitudinalmovement when reaching the limit of their outward travel, membersconnected with the respective hydroplanes and having screwthreadconnection with the plungers, and clutch devices between the plungersand hydroplanes brought into active operation during the final outwardmovement of the hydroplane.

i. In. a submarine boat, members mounted to turn about theirlongitudinal axes, hydro planes piivotally'supported by said members,means for extending and folding the hydroplanes, and stops connectedwith the'hydroplanes and adapted to engage the outer ends of the memberspivotally SUPPOl'tlDg the hydroplanes;

5. In a submarine boat, rotatable members, hydroplanes pivotallysupported by said rotary members, plungers having connection with therespective hydroplanes for extending and folding them, and clutchelements between the plungers and hydroplanes brought into activeoperation when the plungers are at the limit of their outward movement.

6. In a submarine boat, folding hydroplanes, rotatable members pivotallysupporting the hydroplanes, plungers mounted within the members toreciprocate therein and having a combined longitudinal and rotarymovement at the outward limit of their travel, and members having linkconnection with the hydroplanes and screwthread connection with therespective plungers and held stationary when the hydroplanes areextended into operative position and during the combined longitudinaland rotary movement of the plungers.

7. In a submarine boat, folding hydroplanes, rotatable members pivotallysupporting the hydroplanes, plungers mounted within the members toreciprocate therein and having a combined longitudinal and rotarymovement at the outward limit of their 1 travel, members having linkconnection with the respective plungers, and held stationary when thehydroplanes are extended into operative position and during the combinedlongitudinal and rotary movement of the plungers, and cooperating clutchelements having connection with the hydroplanes and plungers and broughtinto active engagement during the final outward movement of theplungers.

8. In a submarine boat, folding hydroplanes having stop and clutchelements associated therewith, rotatable members havmovement and acombined longitudinal and rotary movement, plugs having screwthreadconnection with the plungers and link con nection with the hydroplanes,and means for holding the rotatable supports stationary during thelongitudinal movement of the plungers and releasing the rotatablesupports when the plungers are at the limit of their outward movement toadmit of the plungers and rotatable supports turning about alongitudinal axis to tilt the hydro planes.

10. In a submarine boat, folding and tilting hydroplanes, rotarysupports therefor, plungers having connection with the respectivehydroplanes and adapted to receive reciprocating movement and a combinedlongitudinal and rotary movement when reaching the limit of theirforward travel, and holding means movable with the plungers to preventrotation of the said rotary supports during the reciprocating movementsof the plungers and adapted to release the supports when the plungersare at the limit of their forward travel to admit of the said supportsturning to tilt the hydroplanes.

11. In a submarine boat, folding and tilting hydroplanes, rotarysupports therefor, plungers having connection with the respec tivehydroplanes and adapted to reciprocate within the supports and toreceive a combined rotary and longitudinal movement when reaching thelimit of their outward travel, guide means between the plungers androtary supports, and holding means movable with the plungers and actingto prevent rotation of the rotary supports dur-- ing the reciprocating'inovenients of the lun ers and ada ted to release the su orts when theplungers are at the limit of their forward travel to admit of thesupports turning to tilt the hydroplanes.

12. In a submarine boat, folding and tilting hydroplanes, bearings,supports for the hydroplanes rotatably mounted in the bearings, therebeing correspondin longitudinally disposed guidesways in t e bearingsand supports, plungers mounted within the rotary supports and adapted toreciprocate therein and to receive a combined longitudinal and rotarymovement when reaching the limit of their forward travel, guide meansbetween the plungers and supports to hold them in predetermined positionduring the reciprocating movements of the plunbers" and adapted torelease, the plungers to admit of their combined longitudinal and rotarymovement, and holding means movable with the plungers and operating inthe guideways of the supports and bearings and adapted to clear theguide-ways of the bearings when the plungers are atthe limit of i aytheir forward travel to admit of the plungers and'supports turning inthe hearings to tilt the hydroplanes.

13. In a submarineboat, folding and tilt ing hydroplanes, rotarysupports for the hydroplanes and having longitudinal guideways, bearingsreceiving the rotary supports and provided with guide-ways in coincidentposition with the guide-ways of the supports, plungers mounted toreciprocate within the supports and having connection with thehydroplanes, guide means between the plungers and rotary supports, andholding means movable with the plungers and adapt ed to operate'in theguide-ways of the'supports and bearings and adapted to clear theguide-ways of the bearings when the plungers are at the limit of theirforward travel to admit of the plungers and rotary supports turning totilt the hydroplanes.

14. In a submarine boat, folding and tilting 7 hydroplanes, rotarysupports therefor provided with longitudinal guide-ways registering withthe longitudinal guide-ways of the supports, the guide-ways of thebearings having laterally extending clearance-ways at then. forwardends, 'plungers mounted to reciprocate within the rotary supports and;

having connection with the hydroplanes, and holdingmeans movable withtheplungers and adapted to operate in the guideways o-f the supports andbearings to prevent turning of the supports during the o. folding andunfolding of the hydroplanes and adapted to register with theclearanceways when the plungers are at the l1m1t of their forwardtravelto admit of the turning ol the rotary supports to tilt the hydroplanes.

15. In a submarine boat, folding and tilting hydroplanes, rotarysupports therefor provided with two sets of longitudinally disposedguide-ways, bearings for the rotary supports having guide-ways in concldent position with one set of guide-ways of the supports, plungersmounted to reciprocate within the supports and having guide elementscooperating with the remaining guide-ways of the supports, and havingconnection with the hydroplanes, and holda travel, cooperating guidemeans between the ing means movable with the plunger-s and adapted tooperate in the registering guideways of the supports and bearings whenthe plungers are at the limit of their forward travel.

16. In a submarine boat, folding and tilting hydroplanes, rotarysupports therefor, bearings receiving the supports, said bearings andsupports having corresponding guide-ways and the guide-ways of thebearings having laterally extending clearanceways, plungers mounted toreciprocate within the supports and adapted to receive a combinedlongitudinal and rotary movement when reaching the limit of theirforward plungers and rotary supports plugs having connection with thehydroplanes andscrewthread connection with the respective plungers, andholding means movable with the plungers and adapted to operate in theguidaways of the supports and bearings to register with theclearance-ways of the bearings when the plungers are at the limit oftheir forward travel to admit of the supports turning to tilt thehydroplanes.

17. In a submarine boat, folding and tilt ing hydroplanes, rotarysupports therefor, plungers mounted toreciprocate within the supportsand adapted to receive a combined rotary and longitudinal movement whenreaching the limit of their forward travel, connecting means between theplungers and hydroplanes, and a single shaft having screwthreadconnection with the plungers and adapted to effect a simultaneousmovement thereof to fold or unfold the hydroplanes and to tilt suchhydroplanes when extended into operative position.

18. In a submarine boat folding and tilt-- ing hydroplanes,'rotarysupports therefor, plungers mounted to reciprocate within the supportsand. to turn therewith when reaching the limit of their forward travel,and clutch means between the plungers and hydroplanes to insure a firmconnection between them during the turning of the plungers about theiraxes to tilt the hydroplanes. 19. In a submarineboat, folding and. tilting hydroplanes, rotary supports therefor, plungers mounted toreciprocate within the supports and to turn therewith when at the limitof their forward travel, plugs having screwthread connection with theplungers, connecting means between the plugs and hydroplanes, and clutchmechanism between the plungers and hydroplanes to obtain a firmconnection between such parts to insure turning of the hydroplanes andplungers when tilting the hydroplanes into submerging or risingposition.

20. In a submarine boat, bearings disposed within the sides of the boat,cylinders rotatablymounted in the bearings, the cyllnders and bearingshaving registering longitudinally disposed guide-ways, hydroplanespivotally supported by the cylinders, plnngers mounted to reciprocatewithin the cylinders, cooperating clutch elements associated with thehydroplanes and plungers, and members having connection with the hyproplanes and screwthread-connection with the respective plunger-s.

21. In a submarine boat, bearings arranged within. the sides thereof,cylinders mounted in the bearings and having a limited rotary movement,hydroplanes pivotally supported by the cylinders, plungers mounted toreciprocate within the cylinders and adapted when at the limit of theirforward movement to make firm engagement withthe hydroplanes, connectingmeans between the hydroplanes and plungers and having a limited movementwith respect to the plungers, and. holding means movable I mounted. inthe bearings and formed with longitudinal guide-ways in register withthe gu1dcways of the bearings, folding and MM- ing hydroplanes supportedby the cylinders,

plungers mounted to reciprocate within the cylinders, plugs havingscrewthread connection with the plnngers and connected with thehydroplanes, clutchelements associated with the hydroplanes and plungersand. brought into active engagement when the plnngers are at the limitof their outward travel, and holding means movable withthe plungers andadapted to operate in the guide-ways of the cylinders and bearings andto register with the clearance-ways of the bearings when the plungersare at the limit of their forward travel to admit of the cylinders andplungers turning together when tilting the hydroplanes into submergingposition,

23. In a submarine boat, bearings mounted within the sides of the boatand provided with longitudinal guide-ways terminating at their forwardends in laterally extending clearanceavays, cylinders rotatable in thebearings and formed with longitudinal guide-ways to register with theguide ways of the bearings,hydroplanes pivotally sup ported by thecylinders, plungers mounted to reciprocate in the cylinders and toreceive a combined longitudinal and rotary movement when reaching thelimit of "their forward travel, plugs having screwthread connection withthe plunger's, links connecting the plugs with the hydroplanes, guidemeans between the plungers and the cylinders, holdings means movablewith the plungers and adapted to operate in the registering gnide-waysof the cylinders and bearings and adapted to register with the clearanceways of the bearings when the plungers are at the limit of their forwardtravel, stops associated with the hydroplanes to engage the outer endsof the cylinders and hold the hydroplanes extended in operativeposition, and clutch elements associated with the hy droplanes andplnngers and in operative engagement when the plungers are at the limitof their forward travel.

24. In a submarine boat, bearings mounted within the sides of the boatand provided with longitudinal guide-ways and laterally extendingclearance-ways, cylinders rotatable in the bearings and formed withlongitudinal guide-ways, hydroplanes pivoted to the cylinders, plungersmounted to reciprocate within the cylinders and to receive a combinedrotary and longitudinal movement, connecting means between thehydroplanes and plungers, and yokes loosely mounted upon the plnngersand having outwardly extending portions to operate in the guide-ways ofthe cylinders and plungers.

25. In a submarine boat, pillow bloc-ks having longitudinal guide-waysand laterinders, plungers embodying head and stem.

portions to operate in the cylinders and hollow extensions,respectively, the stem portions beingprovided with guide lugs to op"crate 1n the guide-ways of the sald hollow extensions, plugshavingscrewthread connection with the heads of the plungers and connected bymeans of links with the hydroheads of the plungers and havingofistanding portions to operate in the guide-ways of the cylinders andillow blocks, stops connected with the hyc roplanes extended in0perative position, and clutch elements associated with the hydroplanesand plungers and brought into active operation when the plungers are atthe limit of their forward travel.

In testimony whereof I have hereunto set my hand this 27 day of DecemberA. D.

' J OHANNES F. W. KOLVIG.

Witnesses EDGAR A. WILLIAMS, JAMES R. MAOINTYRE.

I planes, yokes loosely connected with the

